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How to use PositionComponentResolutionLayerIterator method in wpt

Best JavaScript code snippet using wpt

jpx.js

Source:jpx.js

...725      }726      throw new Error('JPX Error: Out of packets');727    };728  }729  function PositionComponentResolutionLayerIterator(context) {730    var siz = context.SIZ;731    var tileIndex = context.currentTile.index;732    var tile = context.tiles[tileIndex];733    var layersCount = tile.codingStyleDefaultParameters.layersCount;734    var componentsCount = siz.Csiz;735    var precinctsSizes = getPrecinctSizesInImageScale(tile);736    var precinctsIterationSizes = precinctsSizes;737    var l = 0, r = 0, c = 0, px = 0, py = 0;738    this.nextPacket = function JpxImage_nextPacket() {739      // Section B.12.1.4 Position-component-resolution-layer740      for (; py < precinctsIterationSizes.maxNumHigh; py++) {741        for (; px < precinctsIterationSizes.maxNumWide; px++) {742          for (; c < componentsCount; c++) {743            var component = tile.components[c];744            var decompositionLevelsCount =745              component.codingStyleParameters.decompositionLevelsCount;746            for (; r <= decompositionLevelsCount; r++) {747              var resolution = component.resolutions[r];748              var sizeInImageScale =749                precinctsSizes.components[c].resolutions[r];750              var k = getPrecinctIndexIfExist(751                px,752                py,753                sizeInImageScale,754                precinctsIterationSizes,755                resolution);756              if (k === null) {757                continue;758              }759              for (; l < layersCount;) {760                var packet = createPacket(resolution, k, l);761                l++;762                return packet;763              }764              l = 0;765            }766            r = 0;767          }768          c = 0;769        }770        px = 0;771      }772      throw new Error('JPX Error: Out of packets');773    };774  }775  function ComponentPositionResolutionLayerIterator(context) {776    var siz = context.SIZ;777    var tileIndex = context.currentTile.index;778    var tile = context.tiles[tileIndex];779    var layersCount = tile.codingStyleDefaultParameters.layersCount;780    var componentsCount = siz.Csiz;781    var precinctsSizes = getPrecinctSizesInImageScale(tile);782    var l = 0, r = 0, c = 0, px = 0, py = 0;783    this.nextPacket = function JpxImage_nextPacket() {784      // Section B.12.1.5 Component-position-resolution-layer785      for (; c < componentsCount; ++c) {786        var component = tile.components[c];787        var precinctsIterationSizes = precinctsSizes.components[c];788        var decompositionLevelsCount =789          component.codingStyleParameters.decompositionLevelsCount;790        for (; py < precinctsIterationSizes.maxNumHigh; py++) {791          for (; px < precinctsIterationSizes.maxNumWide; px++) {792            for (; r <= decompositionLevelsCount; r++) {793              var resolution = component.resolutions[r];794              var sizeInImageScale = precinctsIterationSizes.resolutions[r];795              var k = getPrecinctIndexIfExist(796                px,797                py,798                sizeInImageScale,799                precinctsIterationSizes,800                resolution);801              if (k === null) {802                continue;803              }804              for (; l < layersCount;) {805                var packet = createPacket(resolution, k, l);806                l++;807                return packet;808              }809              l = 0;810            }811            r = 0;812          }813          px = 0;814        }815        py = 0;816      }817      throw new Error('JPX Error: Out of packets');818    };819  }820  function getPrecinctIndexIfExist(821    pxIndex, pyIndex, sizeInImageScale, precinctIterationSizes, resolution) {822    var posX = pxIndex * precinctIterationSizes.minWidth;823    var posY = pyIndex * precinctIterationSizes.minHeight;824    if (posX % sizeInImageScale.width !== 0 ||825        posY % sizeInImageScale.height !== 0) {826      return null;827    }828    var startPrecinctRowIndex =829      (posY / sizeInImageScale.width) *830      resolution.precinctParameters.numprecinctswide;831    return (posX / sizeInImageScale.height) + startPrecinctRowIndex;832  }833  function getPrecinctSizesInImageScale(tile) {834    var componentsCount = tile.components.length;835    var minWidth = Number.MAX_VALUE;836    var minHeight = Number.MAX_VALUE;837    var maxNumWide = 0;838    var maxNumHigh = 0;839    var sizePerComponent = new Array(componentsCount);840    for (var c = 0; c < componentsCount; c++) {841      var component = tile.components[c];842      var decompositionLevelsCount =843        component.codingStyleParameters.decompositionLevelsCount;844      var sizePerResolution = new Array(decompositionLevelsCount + 1);845      var minWidthCurrentComponent = Number.MAX_VALUE;846      var minHeightCurrentComponent = Number.MAX_VALUE;847      var maxNumWideCurrentComponent = 0;848      var maxNumHighCurrentComponent = 0;849      var scale = 1;850      for (var r = decompositionLevelsCount; r >= 0; --r) {851        var resolution = component.resolutions[r];852        var widthCurrentResolution =853          scale * resolution.precinctParameters.precinctWidth;854        var heightCurrentResolution =855          scale * resolution.precinctParameters.precinctHeight;856        minWidthCurrentComponent = Math.min(857          minWidthCurrentComponent,858          widthCurrentResolution);859        minHeightCurrentComponent = Math.min(860          minHeightCurrentComponent,861          heightCurrentResolution);862        maxNumWideCurrentComponent = Math.max(maxNumWideCurrentComponent,863          resolution.precinctParameters.numprecinctswide);864        maxNumHighCurrentComponent = Math.max(maxNumHighCurrentComponent,865          resolution.precinctParameters.numprecinctshigh);866        sizePerResolution[r] = {867          width: widthCurrentResolution,868          height: heightCurrentResolution869        };870        scale <<= 1;871      }872      minWidth = Math.min(minWidth, minWidthCurrentComponent);873      minHeight = Math.min(minHeight, minHeightCurrentComponent);874      maxNumWide = Math.max(maxNumWide, maxNumWideCurrentComponent);875      maxNumHigh = Math.max(maxNumHigh, maxNumHighCurrentComponent);876      sizePerComponent[c] = {877        resolutions: sizePerResolution,878        minWidth: minWidthCurrentComponent,879        minHeight: minHeightCurrentComponent,880        maxNumWide: maxNumWideCurrentComponent,881        maxNumHigh: maxNumHighCurrentComponent882      };883    }884    return {885      components: sizePerComponent,886      minWidth: minWidth,887      minHeight: minHeight,888      maxNumWide: maxNumWide,889      maxNumHigh: maxNumHigh890    };891  }892  function buildPackets(context) {893    var siz = context.SIZ;894    var tileIndex = context.currentTile.index;895    var tile = context.tiles[tileIndex];896    var componentsCount = siz.Csiz;897    // Creating resolutions and sub-bands for each component898    for (var c = 0; c < componentsCount; c++) {899      var component = tile.components[c];900      var decompositionLevelsCount =901        component.codingStyleParameters.decompositionLevelsCount;902      // Section B.5 Resolution levels and sub-bands903      var resolutions = [];904      var subbands = [];905      for (var r = 0; r <= decompositionLevelsCount; r++) {906        var blocksDimensions = getBlocksDimensions(context, component, r);907        var resolution = {};908        var scale = 1 << (decompositionLevelsCount - r);909        resolution.trx0 = Math.ceil(component.tcx0 / scale);910        resolution.try0 = Math.ceil(component.tcy0 / scale);911        resolution.trx1 = Math.ceil(component.tcx1 / scale);912        resolution.try1 = Math.ceil(component.tcy1 / scale);913        resolution.resLevel = r;914        buildPrecincts(context, resolution, blocksDimensions);915        resolutions.push(resolution);916        var subband;917        if (r === 0) {918          // one sub-band (LL) with last decomposition919          subband = {};920          subband.type = 'LL';921          subband.tbx0 = Math.ceil(component.tcx0 / scale);922          subband.tby0 = Math.ceil(component.tcy0 / scale);923          subband.tbx1 = Math.ceil(component.tcx1 / scale);924          subband.tby1 = Math.ceil(component.tcy1 / scale);925          subband.resolution = resolution;926          buildCodeblocks(context, subband, blocksDimensions);927          subbands.push(subband);928          resolution.subbands = [subband];929        } else {930          var bscale = 1 << (decompositionLevelsCount - r + 1);931          var resolutionSubbands = [];932          // three sub-bands (HL, LH and HH) with rest of decompositions933          subband = {};934          subband.type = 'HL';935          subband.tbx0 = Math.ceil(component.tcx0 / bscale - 0.5);936          subband.tby0 = Math.ceil(component.tcy0 / bscale);937          subband.tbx1 = Math.ceil(component.tcx1 / bscale - 0.5);938          subband.tby1 = Math.ceil(component.tcy1 / bscale);939          subband.resolution = resolution;940          buildCodeblocks(context, subband, blocksDimensions);941          subbands.push(subband);942          resolutionSubbands.push(subband);943          subband = {};944          subband.type = 'LH';945          subband.tbx0 = Math.ceil(component.tcx0 / bscale);946          subband.tby0 = Math.ceil(component.tcy0 / bscale - 0.5);947          subband.tbx1 = Math.ceil(component.tcx1 / bscale);948          subband.tby1 = Math.ceil(component.tcy1 / bscale - 0.5);949          subband.resolution = resolution;950          buildCodeblocks(context, subband, blocksDimensions);951          subbands.push(subband);952          resolutionSubbands.push(subband);953          subband = {};954          subband.type = 'HH';955          subband.tbx0 = Math.ceil(component.tcx0 / bscale - 0.5);956          subband.tby0 = Math.ceil(component.tcy0 / bscale - 0.5);957          subband.tbx1 = Math.ceil(component.tcx1 / bscale - 0.5);958          subband.tby1 = Math.ceil(component.tcy1 / bscale - 0.5);959          subband.resolution = resolution;960          buildCodeblocks(context, subband, blocksDimensions);961          subbands.push(subband);962          resolutionSubbands.push(subband);963          resolution.subbands = resolutionSubbands;964        }965      }966      component.resolutions = resolutions;967      component.subbands = subbands;968    }969    // Generate the packets sequence970    var progressionOrder = tile.codingStyleDefaultParameters.progressionOrder;971    switch (progressionOrder) {972      case 0:973        tile.packetsIterator =974          new LayerResolutionComponentPositionIterator(context);975        break;976      case 1:977        tile.packetsIterator =978          new ResolutionLayerComponentPositionIterator(context);979        break;980      case 2:981        tile.packetsIterator =982          new ResolutionPositionComponentLayerIterator(context);983        break;984      case 3:985        tile.packetsIterator =986          new PositionComponentResolutionLayerIterator(context);987        break;988      case 4:989        tile.packetsIterator =990          new ComponentPositionResolutionLayerIterator(context);991        break;992      default:993        throw new Error('JPX Error: Unsupported progression order ' +994                        progressionOrder);995    }996  }997  function parseTilePackets(context, data, offset, dataLength) {998    var position = 0;999    var buffer, bufferSize = 0, skipNextBit = false;1000    function readBits(count) {...

Using AI Code Generation

1var wpt = require('wpt');2var wpt = new WebPageTest('www.webpagetest.org');3  if(err) console.log(err);4  console.log(data);5});6var wpt = require('wpt');7var wpt = new WebPageTest('www.webpagetest.org');8  if(err) console.log(err);9  console.log(data);10});11var wpt = require('wpt');12var wpt = new WebPageTest('www.webpagetest.org');13  if(err) console.log(err);14  console.log(data);15});16var wpt = require('wpt');17var wpt = new WebPageTest('www.webpagetest.org');18  if(err) console.log(err);19  console.log(data);20});21var wpt = require('wpt');22var wpt = new WebPageTest('www.webpagetest.org');23  if(err) console.log(err);24  console.log(data);25});26var wpt = require('wpt');27var wpt = new WebPageTest('www.webpagetest.org');28  if(err) console.log(err);29  console.log(data);30});

Using AI Code Generation

1var wpt = require("wpt");2var positionComponentResolutionLayerIterator = wpt.PositionComponentResolutionLayerIterator;3var positionComponentResolutionLayerIterator = new positionComponentResolutionLayerIterator();4positionComponentResolutionLayerIterator.setLayer(1);5positionComponentResolutionLayerIterator.setResolution(2);6positionComponentResolutionLayerIterator.setPosition(3);7positionComponentResolutionLayerIterator.setComponent(4);8positionComponentResolutionLayerIterator.setTile(5);9positionComponentResolutionLayerIterator.setTileComponent(6);10positionComponentResolutionLayerIterator.setTileComponentResolution(7);11positionComponentResolutionLayerIterator.setTileComponentResolutionLevel(8);12positionComponentResolutionLayerIterator.setTileComponentResolutionLevelPrecinct(9);13positionComponentResolutionLayerIterator.setTileComponentResolutionLevelPrecinctSubband(10);14positionComponentResolutionLayerIterator.setTileComponentResolutionLevelPrecinctSubbandBlock(11);15var layer = positionComponentResolutionLayerIterator.getLayer();16var resolution = positionComponentResolutionLayerIterator.getResolution();17var position = positionComponentResolutionLayerIterator.getPosition();18var component = positionComponentResolutionLayerIterator.getComponent();19var tile = positionComponentResolutionLayerIterator.getTile();20var tileComponent = positionComponentResolutionLayerIterator.getTileComponent();21var tileComponentResolution = positionComponentResolutionLayerIterator.getTileComponentResolution();22var tileComponentResolutionLevel = positionComponentResolutionLayerIterator.getTileComponentResolutionLevel();23var tileComponentResolutionLevelPrecinct = positionComponentResolutionLayerIterator.getTileComponentResolutionLevelPrecinct();24var tileComponentResolutionLevelPrecinctSubband = positionComponentResolutionLayerIterator.getTileComponentResolutionLevelPrecinctSubband();25var tileComponentResolutionLevelPrecinctSubbandBlock = positionComponentResolutionLayerIterator.getTileComponentResolutionLevelPrecinctSubbandBlock();26console.log("Layer: " + layer);27console.log("Resolution: " + resolution);28console.log("Position: " + position);29console.log("Component: " + component);30console.log("Tile: " + tile);31console.log("TileComponent: " + tileComponent);32console.log("TileComponentResolution: " + tileComponentResolution);33console.log("TileComponentResolutionLevel: " + tileComponentResolutionLevel);34console.log("TileComponentResolutionLevelPrecinct: " + tileComponentResolutionLevelPrecinct);35console.log("TileComponentResolutionLevelPrecinctSubband: " + tileComponentResolutionLevelPrecinctSubband);36console.log("TileComponentResolutionLevelPrecinctSubbandBlock: " + tileComponentResolutionLevelPrecinctSubbandBlock);

Using AI Code Generation

1var wptc = require('wptc');2var path = require('path');3var fs = require('fs');4var file = path.resolve(__dirname, 'test.tif');5var layer = new wptc.PositionComponentResolutionLayerIterator(file);6var x = 0;7var y = 0;8var z = 0;9var res = layer.getResolution(x, y, z);10console.log(res);11#### PositionComponentResolutionLayerIterator(filename)12#### PositionComponentResolutionLayerIterator.getResolution(x, y, z)

Using AI Code Generation

1var wpt = require('wpt');2var iterator = new wpt.PositionComponentResolutionLayerIterator();3iterator.setStartPoint(0, 0);4iterator.setEndPoint(500, 500);5iterator.setResolution(1);6iterator.setLayer(0);7while (iterator.hasNext()) {8    var point = iterator.next();9    console.log(point);10}

Using AI Code Generation

1var wptree = require('./wptree.js');2var json = require('./test.json');3var tree = new wptree.Tree(json);4var iterator = new wptree.PositionComponentResolutionLayerIterator(tree);5while (iterator.hasNext()) {6    var node = iterator.next();7    console.log(node.position + " " + node.componentResolution);8}

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